Evidence row 567578

What was observed

{
  "count": 5,
  "tools": [
    {
      "description": "Build a link that puts the given products into the customer's cart.\n\nThis tool writes nothing. It returns a URL; the products are added only\nwhen the customer opens that URL in their own browser. Give the URL to the\ncustomer and let them click it.\n\nArgs:\n    items: 1-20 rows of {\"product_id\": int >= 1, \"quantity\": int 1-50}.\n        Unknown fields are rejected. Repeated product_ids are merged into\n        one row and their quantities summed.\n    checkout: If True, opening the link takes the customer straight to\n        checkout; if False (default) it opens the cart review page.\n\nReturns:\n    JSON with cart_url, the normalised items, item_count, total_quantity,\n    the echoed checkout flag and a short note to show the customer.\n\nErrors (isError=true, body {\"error\": {...}}):\n    - products_not_found: one or more product_ids do not exist or are not\n      published. The message lists the offending ids.\n    - shop_api_unavailable: the shop could not be reached; retryable.\n\nNotes:\n    - The link SETS the quantities, it does not add to what is already in\n      the cart. Opening the same link twice gives the same result as\n      opening it once, so the customer can safely click it again.\n    - Stock is re-checked when the link is opened. If stock ran out in the\n      meantime, the quantity is reduced or the row skipped — the link can\n      never oversell.\n    - Checkout requires a customer account, so the customer may be asked to\n      log in or register before paying.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "checkout": {
            "default": false,
            "description": "If True, the link goes straight to checkout; otherwise (default) to the cart review page",
            "type": "boolean"
          },
          "items": {
            "description": "1-20 products to put in the cart",
            "items": {
              "additionalProperties": false,
              "description": "One cart row. Unknown fields are rejected.",
              "properties": {
                "product_id": {
                  "description": "Product ID from search_catalog",
                  "minimum": 1,
                  "type": "integer"
                },
                "quantity": {
                  "default": 1,
                  "description": "1-50",
                  "maximum": 50,
                  "minimum": 1,
                  "type": "integer"
                }
              },
              "required": [
                "product_id"
              ],
              "type": "object"
            },
            "maxItems": 20,
            "minItems": 1,
            "type": "array"
          }
        },
        "required": [
          "items"
        ],
        "type": "object"
      },
      "name": "create_cart_link"
    },
    {
      "description": "Get full details and current stock for one Okun Koneosa product.\n\nArgs:\n    product_id: The numeric product id returned by search_catalog.\n\nReturns:\n    JSON with the full product record: id, name, name_raw, sku, ean, brand,\n    category, full description (not truncated), price_gross, price_net,\n    vat_percent, currency, unit, weight_kg, product_url, image_url, plus a\n    freshly checked in_stock / stock_quantity.\n\nNotes:\n    - Stock is read at call time from a separate availability endpoint, so\n      it is more current than the value returned by search_catalog.\n    - Returns {\"error\": \"product_not_found\"} for unknown or unpublished\n      ids. Products that are out of stock are unpublished, so a previously\n      valid id can stop resolving.\n    - To let the user buy, pass product_url, or build a cart link with\n      create_cart_link.",
      "inputSchema": {
        "properties": {
          "product_id": {
            "description": "Product ID from search_catalog",
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "product_id"
        ],
        "type": "object"
      },
      "name": "get_product_details"
    },
    {
      "description": "Search the Okun Koneosa product catalog.\n\nOkun Koneosa Oy (okunkoneosa.fi) is a Finnish industrial supplies store in\nOutokumpu, North Karelia. Around 6500 products: bearings, belts, seals,\nhydraulics, pneumatics, fasteners, hand tools, protective equipment and\nmachine parts. Everything listed is physically in stock. Prices in EUR,\nincluding Finnish VAT 25.5%. Free shipping on orders over 150 EUR.\n\nArgs:\n    query: Free-text search — matches product name, ordering number (SKU)\n        or EAN code. Leave empty to browse a category.\n    category_id: Restrict to one category. The category list is available\n        at https://okunkoneosa.fi/api/v1/categories (a plain REST endpoint,\n        not an MCP tool).\n    in_stock_only: True by default. The shop only publishes products that\n        are in stock, so this rarely changes the result.\n    sort: \"name\" (default), \"price_asc\", \"price_desc\" or \"newest\".\n    limit: Products per page, 1-50 (default 10).\n    page: Page number for paging through larger result sets.\n\nReturns:\n    JSON with:\n    - products: list of products, each with id, name, name_raw, sku, ean,\n      brand, category, price_gross (incl. VAT), price_net, currency, unit,\n      in_stock, stock_quantity, weight_kg, product_url, image_url and a\n      shortened description (description_truncated tells if it was cut).\n    - total, page, per_page, total_pages\n    - disclaimer: prices and availability are confirmed at checkout\n\nNotes:\n    - `name` is cleaned for reading; `name_raw` is the supplier's own\n      spelling, useful for exact matching against a supplier catalogue.\n    - `image_url` is null for most products — the shop is still collecting\n      product photography from suppliers. A missing image does not mean the\n      product is unavailable.\n    - Use get_product_details(id) for the full description and a fresh\n      stock check.",
      "inputSchema": {
        "properties": {
          "category_id": {
            "anyOf": [
              {
                "minimum": 1,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Category ID"
          },
          "in_stock_only": {
            "default": true,
            "type": "boolean"
          },
          "limit": {
            "default": 10,
            "description": "1-50",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "page": {
            "default": 1,
            "description": "Page number (>= 1)",
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "default": "",
            "description": "Free-text search term",
            "type": "string"
          },
          "sort": {
            "default": "name",
            "enum": [
              "name",
              "price_asc",
              "price_desc",
              "newest"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_catalog"
    },
    {
      "description": "Search the Okun Koneosa product catalog.\n\nOkun Koneosa Oy (okunkoneosa.fi) is a Finnish industrial supplies store in\nOutokumpu, North Karelia. Around 6500 products: bearings, belts, seals,\nhydraulics, pneumatics, fasteners, hand tools, protective equipment and\nmachine parts. Everything listed is physically in stock. Prices in EUR,\nincluding Finnish VAT 25.5%. Free shipping on orders over 150 EUR.\n\nArgs:\n    query: Free-text search — matches product name, ordering number (SKU)\n        or EAN code. Leave empty to browse a category.\n    category_id: Restrict to one category. The category list is available\n        at https://okunkoneosa.fi/api/v1/categories (a plain REST endpoint,\n        not an MCP tool).\n    in_stock_only: True by default. The shop only publishes products that\n        are in stock, so this rarely changes the result.\n    sort: \"name\" (default), \"price_asc\", \"price_desc\" or \"newest\".\n    limit: Products per page, 1-50 (default 10).\n    page: Page number for paging through larger result sets.\n\nReturns:\n    JSON with:\n    - products: list of products, each with id, name, name_raw, sku, ean,\n      brand, category, price_gross (incl. VAT), price_net, currency, unit,\n      in_stock, stock_quantity, weight_kg, product_url, image_url and a\n      shortened description (description_truncated tells if it was cut).\n    - total, page, per_page, total_pages\n    - disclaimer: prices and availability are confirmed at checkout\n\nNotes:\n    - `name` is cleaned for reading; `name_raw` is the supplier's own\n      spelling, useful for exact matching against a supplier catalogue.\n    - `image_url` is null for most products — the shop is still collecting\n      product photography from suppliers. A missing image does not mean the\n      product is unavailable.\n    - Use get_product_details(id) for the full description and a fresh\n      stock check.",
      "inputSchema": {
        "properties": {
          "category_id": {
            "anyOf": [
              {
                "minimum": 1,
                "type": "integer"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Category ID"
          },
          "in_stock_only": {
            "default": true,
            "type": "boolean"
          },
          "limit": {
            "default": 10,
            "description": "1-50",
            "maximum": 50,
            "minimum": 1,
            "type": "integer"
          },
          "page": {
            "default": 1,
            "description": "Page number (>= 1)",
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "default": "",
            "description": "Free-text search term",
            "type": "string"
          },
          "sort": {
            "default": "name",
            "enum": [
              "name",
              "price_asc",
              "price_desc",
              "newest"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_shop_catalog"
    },
    {
      "description": "Search Okun Koneosa's shop policies and terms.\n\nCovers delivery terms, privacy policy, terms of service, the consumer right\nof withdrawal / returns, and company information. Use this instead of\nguessing when the customer asks about delivery times, shipping costs,\nreturns, warranty or how their data is handled.\n\nArgs:\n    query: Finnish keyword, e.g. \"palautus\", \"toimitusaika\", \"takuu\",\n        \"toimituskulut\". Leave empty to list all sections.\n    limit: Maximum sections to return (1-20, default 5).\n\nReturns:\n    JSON with:\n    - sections: each with page, page_title, heading, content and url\n    - total: how many sections matched\n    - query: the term that was searched\n\nNotes:\n    - Content is split by heading, so you get the relevant paragraph rather\n      than a whole page. Always cite the `url` so the customer can read the\n      full terms.\n    - These are the shop's own terms. They do not override Finnish consumer\n      law.",
      "inputSchema": {
        "properties": {
          "limit": {
            "default": 5,
            "description": "Max sections (1-20)",
            "maximum": 20,
            "minimum": 1,
            "type": "integer"
          },
          "query": {
            "default": "",
            "description": "What to look for, e.g. 'palautus', 'toimitusaika'",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "search_shop_policies_and_faqs"
    }
  ]
}

What the leaf hashes

{"body":"d59a2cdbb861828b035e3663ce1c5c8f1420fe5933f9f29f2d9ec3c99c1fb9b4","id":567578,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138776218521,"prev":null,"subject":"5cc3596c-4dfa-446a-a523-983a67ce06b4","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x97949551548f35058da9515dd319386c61c758ea140bc0a329cdf15135c43521
2. 0xabbcee50bb41b11486ad8b83e74cdc0d6e25039f292ab1bed15030d4766b0d20
3. 0x43fde1c9d14574a8e448bbc74eff773ba311b16013860578c83e6bfdd95c3782
4. 0x13e6127076b2bec59a2cbb93e9d71a25a6886ea5a3d1bf9a028096c1779ef1ed
5. 0x4fcf659b095af89640f49121bb8f70d0409ccd253d3ed1bff93367a971e2316b
6. 0x5cc0736078280b7e8d8afb498473027b0588bb3ba9d0bd048e2ac15010fb6f63
7. 0xd844ac3c53357e566d25169520f154e7e93388c161ec4205aea97ced6d374019
8. 0x04f2bbd3c3d35efe6acc52f03a322018f7022aee99a17e148f14b0a1a6f485d6
9. 0xfbe9f14bb060f6a92d8cae608e5cea13f01e836f0b86f486ec5116d338009979
10. 0x7f3f0296b9d7d3887028abd9d9661ae929ff8b3666dcad28e115be6c90bb35fd
11. 0xa5c23f377d8ff4ee53b580cb756ab2bc047f39357bdac89f30099775b7b2ef70
12. 0x265cee5401cfadc89cfe40c27cc910090736b6a94b8d688bb7729f0791087d26
13. 0xfe6d2e9a468b7e99de9162a2ef30ac0b0e3b318387b4356bf524493aa67b295b
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4